# -*- coding: utf-8 -*-
x = int(input())

if x < 600:
    print('8')
elif x < 800:
    print('7')
elif x < 1000:
    print('6')
elif x < 1200:
    print('5')
elif x < 1400:
    print('4')
elif x < 1600:
    print('3')
elif x < 1800:
    print('2')
elif x < 2000:
    print('1') x = int(input()) x int(input()) int input() input if x < 600:
    print('8')
elif x < 800:
    print('7')
elif x < 1000:
    print('6')
elif x < 1200:
    print('5')
elif x < 1400:
    print('4')
elif x < 1600:
    print('3')
elif x < 1800:
    print('2')
elif x < 2000:
    print('1') x < 600 x 600 print('8') print '8' elif x < 800:
    print('7') x < 800 x 800 print('7') print '7' elif x < 1000:
    print('6') x < 1000 x 1000 print('6') print '6' elif x < 1200:
    print('5') x < 1200 x 1200 print('5') print '5' elif x < 1400:
    print('4') x < 1400 x 1400 print('4') print '4' elif x < 1600:
    print('3') x < 1600 x 1600 print('3') print '3' elif x < 1800:
    print('2') x < 1800 x 1800 print('2') print '2' elif x < 2000:
    print('1') x < 2000 x 2000 print('1') print '1' x = int(input()) int(input()) x
# -*- coding: utf-8 -*-
x = int(input())

if x < 600:
    print('8')
elif x < 800:
    print('7')
elif x < 1000:
    print('6')
elif x < 1200:
    print('5')
elif x < 1400:
    print('4')
elif x < 1600:
    print('3')
elif x < 1800:
    print('2')
elif x < 2000:
    print('1')
